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<topic id="topic_tx5_3nf_kp">
  <title>Greenplum Database Reference Guide</title>
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  <titlealts>
    <navtitle>Reference Guide</navtitle>
  </titlealts>
  <shortdesc> Reference information for Greenplum Database systems including SQL commands, system
    catalogs, environment variables, server configuration parameters, character set support,
    datatypes, and Greenplum Database extensions. </shortdesc>
</topic>
